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OpenStudy (nina21):
Jaoquin buys 3 dozen light bulbs. After changing the light bulbs in his house. he has 15 light bulbs left. How any light bulbs did he use? I don't get it can someone explain this medal
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OpenStudy (nina21):
OpenStudy (princeharryyy):
1dozen =12 3dozen = 12*3 =36 not used 15 left 36-x=15 x= 36-15 =21
OpenStudy (princeharryyy):
minus minus becomes plus so 107-(-25) =107+25 =132
OpenStudy (princeharryyy):
x were used bulbs.
OpenStudy (nina21):
thank you
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OpenStudy (princeharryyy):
:)
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